/*
 * @(#)DOMAttrMapImpl.java   1.11 2000/08/16
 *
 */

package org.w3c.tidy;

import org.w3c.dom.DOMException;

/**
 * DOMAttrMapImpl (c) 1998-2000 (W3C) MIT, INRIA, Keio University See Tidy.java
 * for the copyright notice. Derived from <a
 * href="http://www.w3.org/People/Raggett/tidy"> HTML Tidy Release 4 Aug
 * 2000</a>
 * 
 * @author Dave Raggett <dsr@w3.org>
 * @author Andy Quick <ac.quick@sympatico.ca> (translation to Java)
 * @version 1.4, 1999/09/04 DOM support
 * @version 1.5, 1999/10/23 Tidy Release 27 Sep 1999
 * @version 1.6, 1999/11/01 Tidy Release 22 Oct 1999
 * @version 1.7, 1999/12/06 Tidy Release 30 Nov 1999
 * @version 1.8, 2000/01/22 Tidy Release 13 Jan 2000
 * @version 1.9, 2000/06/03 Tidy Release 30 Apr 2000
 * @version 1.10, 2000/07/22 Tidy Release 8 Jul 2000
 * @version 1.11, 2000/08/16 Tidy Release 4 Aug 2000
 */

public class DOMAttrMapImpl implements org.w3c.dom.NamedNodeMap {

    private AttVal first = null;

    protected DOMAttrMapImpl(AttVal first) {
        this.first = first;
    }

    /**
     * @see org.w3c.dom.NamedNodeMap#getNamedItem
     */
    public org.w3c.dom.Node getNamedItem(String name) {
        AttVal att = this.first;
        while (att != null) {
            if (att.attribute.equals(name))
                break;
            att = att.next;
        }
        if (att != null)
            return att.getAdapter();
        else
            return null;
    }

    /**
     * @see org.w3c.dom.NamedNodeMap#setNamedItem
     */
    public org.w3c.dom.Node setNamedItem(org.w3c.dom.Node arg) throws DOMException {
        // NOT SUPPORTED
        return null;
    }

    /**
     * @see org.w3c.dom.NamedNodeMap#removeNamedItem
     */
    public org.w3c.dom.Node removeNamedItem(String name) throws DOMException {
        // NOT SUPPORTED
        return null;
    }

    /**
     * @see org.w3c.dom.NamedNodeMap#item
     */
    public org.w3c.dom.Node item(int index) {
        int i = 0;
        AttVal att = this.first;
        while (att != null) {
            if (i >= index)
                break;
            i++;
            att = att.next;
        }
        if (att != null)
            return att.getAdapter();
        else
            return null;
    }

    /**
     * @see org.w3c.dom.NamedNodeMap#getLength
     */
    public int getLength() {
        int len = 0;
        AttVal att = this.first;
        while (att != null) {
            len++;
            att = att.next;
        }
        return len;
    }

    /**
     * DOM2 - not implemented.
     */
    public org.w3c.dom.Node getNamedItemNS(String namespaceURI, String localName) {
        return null;
    }

    /**
     * DOM2 - not implemented.
     * 
     * @exception org.w3c.dom.DOMException
     */
    public org.w3c.dom.Node setNamedItemNS(org.w3c.dom.Node arg) throws org.w3c.dom.DOMException {
        return null;
    }

    /**
     * DOM2 - not implemented.
     * 
     * @exception org.w3c.dom.DOMException
     */
    public org.w3c.dom.Node removeNamedItemNS(String namespaceURI, String localName) throws org.w3c.dom.DOMException {
        return null;
    }

}
